Atlantic Ocean waters within the square within Long Island Sound on the absolute northwest corner of the square, affecting the following: from the Mattituck Hills to northeast of Centerville, NY. Also, waters within Gardiners Bay and western Great Peconic Bay affecting the following: from just east of Deep Hole Creek southeast of Mattituck, NY., past Jamesport, NY., and South Jamesport, NY., around Flanders Bay to the Shinnecock Canal north of Flanders, NY., Red Creek, NY., and Squiretown, NY., and also east of Riverhead, NY. Waters within the southwest part of Shinnecock Bay are found in this square as well. At the very bottom of the square, waters within Great South Bay estuary can also be found